7H-Pyrano[2,3-d]pyrimidin-7-one CAS 4425-51-8
| CAS No. | 4425-51-8 |
| Molecular Formula | C7H4N2O2 |
| Molecular Weight | 148.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 7H-Pyrano[2,3-d]pyrimidin-7-one.
7H-Pyrano[2,3-d]pyrimidin-7-one (CAS 4425-51-8), molecular formula C7H4N2O2 and molecular weight 148.12 g/mol, is a CATO reference standard with documented purity and traceability.
7H-Pyrano[2,3-d]pyrimidin-7-one (C7H4N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 7H-Pyrano[2,3-d]pyrimidin-7-one meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C7H4N2O2 |
| Molecular Weight | 148.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Related H Standards
- 8H-pyrano[3,4-b]pyridin-8-one (CAS 134407-96-8)
- 4H-pyrano[3,2-b]pyridin-4-one (CAS 2060008-39-9)
- 2H-Pyrano[2,3-b]pyridin-3(4H)-one (CAS 1211515-40-0)
- 5H-pyrano[3,4-b]pyridin-6(8H)-one (CAS 5693-69-6)
- 5H-Pyrano[2,3-d]pyrimidin-7(6H)-one (CAS 5860-43-5)
- 1H-pyrano[3,4-c]pyridin-4-one (CAS 2306262-21-3)
- 1H-pyrano[4,3-c]pyridin-4-one (CAS 2306276-03-7)
- 1H-Pyrano[3,2-d]pyrimidine (CAS 35760-28-2)
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- 2-(3-Methoxyisoxazol-5-yl)-N-methylethanamine (CAS 687602-59-1)
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- Methyl (4-hydroxy-3-methoxy-5-nitrophenyl)acetate (CAS 1072150-31-2)
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